Finding the Fourth Proportional to 2,687.25, 4,031.22 and 955.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,687.25 : 4,031.22 = 955.89 : x
2. Step 2: Convert to fraction form
   2,687.25/4,031.22 = 955.89/x
3. Step 3: Cross multiply
   2,687.25x = 4,031.22 × 955.89
4. Step 4: Simplify right side
   2,687.25x = 3,853,402.89
5. Step 5: Solve for x
   x = 3,853,402.89/2,687.25
6. Step 6: Final answer
   x = 1,433.96